The shaikh, Dr. ʿAbdullah Al-Bhukārī, may Allāh protect him, said:

Comprehensive Words to Hold on to and Follow

A man came to Imām Sufyān Al-Thawrī, may Allāh have mercy on him, and said to him: “Tell me something I must follow or do.”

He said: “Work for the life of this world in accordance with how long you’re going to remain in it, and work for the Hereafter in accordance with how long you’re going to remain in it. Wa-l-Salām [said as a parting greeting].”

Al-Ḥilyah by Abū Nuʿaim, vol. 7, p. 56, and Siyar Al-Sunnah Al-Ṣāliḥīn by Qawwām Al-Sunnah Al-Aṣbaḥānī, p. 105.

Source: @dr_albukhary. 4 May 21.