One verse

Bhagavad Gita 17.21

17.21

यत्तु प्रत्युपकारार्थं फलमुद्दिश्य वा पुनः | दीयते च परिक्लिष्टं तद्दानं राजसं स्मृतम् ||१७-२१||

yattu pratyupakārārthaṃ phalamuddiśya vā punaḥ . dīyate ca parikliṣṭaṃ taddānaṃ rājasaṃ smṛtam ||17-21||

yat
that which
tu
but
prati-upakāra-artham
for the sake of getting some return
phalam
a result
uddiśya
desiring
vā
or
punaḥ
again
dīyate
is given
ca
also
parikliṣṭam
grudgingly
tat
that
dānam
charity
rājasam
in the mode of passion
smṛtam
is understood to be

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.