Narrated 'Ali:
"When I would ask the Messenger of Allah (ﷺ), he would give me, and when I would be silent, he would initiate (speech or giving) with me." (RU)
English reference (RU): Vol. 1, Book 46, Hadith 3722 (RU)
Arabic reference (RU): Book 49, Hadith 4088 (RU)