Riyad Us-Saliheen (Gardens of the Righteous)

Chapter 324
Undesirability of Reviling the Rooster

1730. Zaid bin Khalid Al-Juhani (May Allah be pleased with him) said: The Messenger of Allah (PBUH) said, "Do not revile the rooster for it wakes you up for prayer.''
[Abu Dawud].

Commentary:  This Hadith is self-evident. The utility of the cock is not realized much nowadays as Adhan is amplified through loud-speakers. Before the invention of loudspeakers, the voice of Mu'adhdhin could go to a short distance only and it was cock's crow which used to awaken the Muslims for Tahajjud and Fajr prayers. Thus, we learn from this Hadith that whosoever cooperates in virtue, should be respected. One should also induce people to virtue and cooperate with them in good deeds so that one is well rewarded for it by Allah.