Reference: Siyar A’laam an-Nubalaa – Volume 6, Page 195
Jareer ibn ‘Abdil-Hameed mentioned about Sulaymaan at-Taymee:
Never would an hour pass him except that he would give something away in charity, and if he did not have anything [to give away in charity], he would [then] pray two rak’ahs [of voluntary prayer].