Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) said: The Messenger of Allah (peace and blessings be upon him) said: "Sayyiduna Musa bin Imran (peace be upon him) passed by a man who was trembling, so he stood up to supplicate for him, that Allah might grant him well-being. It was said: O Musa, what is afflicting him is not from Iblis; rather, he has kept himself hungry for My sake. He is someone whom I look at several times every day and marvel at his obedience. So tell him to supplicate for you, for he has (the right to) one supplication with Me every day."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 11645