Bhagavad Gita 17.21
That which is given for the sake of the results it will produce, or with the hope of recompense, or grudgingly—that may truly be said to be the outcome of passion.
यत्तु प्रत्युपकारार्थं फलमुद्दिश्य वा पुनः।दीयते च परिक्लिष्टं तद्दानं राजसं स्मृतम्॥yattu pratyupakārārthaṃ phalamuddiśya vā punaḥ|dīyate ca parikliṣṭaṃ taddānaṃ rājasaṃ smṛtam||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).