Nahj al-Balāgha

Hadith 1739
governance
١٣٩. وَقَالَ (عليه ‏السلام): تَنْزِلُ الْمَعُونَةُ عَلَى قَدْرِ الْمَئُونَةِ.
139. Amīr al-mu’minīn, peace be upon him, said: Assistance is allowed according to need.
Source: al-Sharīf al-Raḍī