Ahmad b. `Ali b. Ibrahim b. Hashim narrated to us. He said: My father narrated to me from my grandfather from al-Saqr b. Dulf He said: I heard my master `Ali b. Muhammad b. `Ali al-Rida say: Whoever has a need from Allah should visit the grave of my grandfather al-Rida in Tus after having bathed. Then, he should pray two units at his head and ask Allah for his need in his qunut, and it will be fulfilled for him as long as he is not asking for depravity or severing blood ties. Surely, the place where he is buried is a plot in Paradise. No believer visits it except that Allah frees him from the Fire and brings him into the Abode of Resolution.