Imam Ali (AS) said, Be the guardian of your soul, and do with your possessions that which you would like others to do with it.
الإمامُ عليٌّ (عَلَيهِ الّسَلامُ) : كُنْ وَصِيَّ نَفْسِكَ وَ افْعَلْ في مالِكَ ما تُحِبُّ أنْ يَفْعَلَهُ فيهِ غَيْرُكَ
Similar narrations
Nahj al-Balāgha #1828254. Amīr al-mu’minīn, peace be upon him, said: O’ son of Adam, be your own representative in the matter of your property and do about it...