Bhagwad Gita
Chapter 17, Verse 21
यत्तु प्रत्युपकारार्थं फलमुद्दिश्य वा पुनः।दीयते च परिक्लिष्टं तद्दानं राजसं स्मृतम्।।17.21।।
But charity performed with the expectation of some return, or with a desire for fruitive results, or in a grudging mood, is said to be charity in the mode of passion.