Abbas - Tanwîr al-Miqbâs min Tafsîr Ibn ‘Abbâs
(That) i.e. being thrown away far off is the lot of he who associates partners with Allah. (And whoso magnifieth the offerings consecrated to Allah) and whoever magnifies the rites of pilgrimage, and thus immolates the fattest and biggest beast of cattle, (it) the immolation of the fattest and biggest beast of cattle (surely is from devotion of the hearts) is due to the limpidity of the person's heart and his sincerity.
That (dhālika, an implied subject, al-amru, ‘the matter [is]’, is taken to precede this [predicate]). And whoever venerates the sacraments of God, then that, in other words, then that veneration of them — namely, [of] the beasts of sacrifice offered in the Sanctuary, after the best of them have been selected and fattened — derives from the piety of the hearts, of those individuals. These [sacraments] are called sha‘ā’ir because they are marked out [ish‘ār] with something to indicate that they are offerings, such as having a hump pierced with a piece of metal.
Explanation of the Udhiyyah and the Sha`a'ir of Allah
وَمَن يُعَظِّمْ شَعَـئِرَ اللَّهِ
(and whosoever honors the Sha`a'ir of Allah,) means, His commands.
فَإِنَّهَا مِن تَقْوَى الْقُلُوبِ
(then it is truly from the Taqwa of the hearts.) This also includes obeying His commands in the best way when it comes to offering sacrifices, as Al-Hakam said narrating from Miqsam, from Ibn `Abbas: "Honoring them means choosing fat, healthy animals (for sacrifice).'' Abu Umamah bin Sahl said: "We used to fatten the Udhiyyah in Al-Madinah, and the Muslims used to fatten them.'' This was recorded by Al-Bukhari. In Sunan Ibn Majah, it was recorded from Abu Rafi` that the Messenger of Allah sacrificed two castrated, fat, horned rams. Abu Dawud and Ibn Majah recorded from Jabir: "The Messenger of Allah sacrificed two castrated, fat, horned rams.'' It was said, "The Messenger of Allah commanded us to examine their eyes and ears, and not to sacrifice the Muqabilah, the Mudabirah, the Sharqa, nor the Kharqa'.'' This was recorded by Ahmad and the Sunan compilers, and At-Tirmidhi graded it Sahih. As for the Muqabilah, it is the one whose ear is cut at the front, Mudabirah is the one whose ear is cut at the back, the Shurqa is the one whose ear is split, as Ash-Shafi`i said. The Kharqa' is the one whose ear is pierced with a hole. And Allah knows best. It was recorded that Al-Bara' said, "The Messenger of Allah said:
(Four are not permitted for sacrifice: those that are obviously one-eyed, those that are obviously sick, those that are obviously lame and those that have broken bones, which no one would choose.) This was recorded by Ahmad and the Sunan compilers, and At-Tirmidhi graded it Sahih.
The Benefits of the Sacrificial Camels
لَكُمْ فِيهَا مَنَـفِعُ
(In them are benefits for you) meaning, in the Budn (sacrificial camels) you find benefits such as their milk their wool and hair, and their use for riding.
لَكُمْ فِيهَا مَنَـفِعُ إِلَى أَجَلٍ مُّسَمًّى
(In them are benefits for you for an appointed term,) Miqsam reported that Ibn `Abbas said: "Until you decide to offer them as a sacrifice.'' It was recorded in the Two Sahihs from Anas that the Messenger of Allah saw a man driving his sacrificial camel and said,
(Ride it.) The man said, "It is a sacrificial camel.'' He said,
(Ride it, woe to you!) the second or third time. According to a report recorded by Muslim from Jabir, the Messenger of Allah said:
(and afterwards they are brought for sacrifice to the `Atiq House.) meaning, they are eventually brought to the `Atiq House -- which is the Ka`bah -- as Allah says:
هَدْياً بَـلِغَ الْكَعْبَةِ
(an offering, brought to the Ka`bah) 5:95
وَالْهَدْىَ مَعْكُوفاً أَن يَبْلُغَ مَحِلَّهُ
(and detained the Hady, from reaching their place of sacrifice) 48:25
Maududi - Sayyid Abul Ala Maududi - Tafhim al-Qur'an
"Symbols of God worship": the performance of Salat, Hajj, Fasting, etc., or things like a Mosque or sacrificial offerings, etc. (See V: 2 and E.N.'s 5-7 thereof).
That is, the observance of the sanctity of the "Symbols" by a man is a proof that there is piety in his heart. On the other hand, the man who violates their sanctity proves himself to be void of piety and fear of God. It shows that he either does not believe at all in Allah or adopts a rebellious attitude against Him.