Musannaf Ibn Abi Shaybah 8946 — The reward of sending blessings

It is narrated from Sayyiduna Abd al-Rahman bin Awf (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "When my Lord gave me good news concerning my Ummah, I prostrated. That good news was that if anyone of my Ummah sends blessings upon me once, Allah Almighty will write ten good deeds in his record of deeds and forgive ten of his sins."