Place of worship favours supplications
This event proves that the place where the chosen people of Allah worship becomes so sacred that the blessings of Allah descends there and the supplications are accepted there; just like the supplication of Sayyiduna Zakariyya was accepted in the chamber of Sayyidatuna Maryam . Whereas, on many previous occasions, he had supplicated frequently in Bayt-ul-Muqaddas but his supplication was not granted.
Supplicating beside graves
If supplications are accepted in those places where the chosen people of Allah perform their worship for few days; then definitively supplications would be accepted beside the graves of these chosen people of Allah where their whole blessed bodies are present. Thus, Imam Shaafi’i has mentioned that whenever he would feel difficulty in finding solution of some religious issue, he_i would visit Baghdad and sat near the blessed grave of Imam-e-A’zam Abu Hanifah , would supplicate by making the holy grave a Wasilah (intermediary) and his supplications would be granted and his problem would get resolved.
(Al-Khayraat-ul-Hisaan, pp. 230)
(For further reading about such events, read our books ‘Awliya, Rijaal-ulHadees and Ruhaani Hikayaat’.)