Reference: Siyar A’laam an-Nubalaa – Volume 7, Page 4444
‘Abdur-Rahmaan ibn Mahdee said:
If it was said to Hammaad ibn Salamah ‘Indeed, you shall die tomorrow’, he would not be able to do any more [righteous] deeds [than he already fills each day with].
adh-Dhahabee noted:
[All of] his time would be filled with worship and [the reading of] set portions [of the Qur.aan].