Bhagavad Gītā Chapter Seventeen verse 20

दातव्यमिति यद्दानं दीयतेऽनुपकारिणे ।
देशे काले च पात्रे च तद्दानं सात्त्विकं स्मृतम् ॥ २० ॥

dātavyam iti yad dānaṃ dīyate ’nupakāriṇe |
deśe kāle ca pātre ca tad dānaṃ sāttvikaṃ smṛtam ||

iti - thus; in this manner; something that has been said or thought; having so saiddāna - the act of giving; to offer a gift, donation, gift; giving up; communicating, imparting, teachingdeśa - place, point, region, spotkāla - time, a period of time; season, the proper time or season forca - andtad - that, thissattva - clarity; the quality of transparency or purity; luminous; honesty; the quality of goodness; material or elementary substance, entity, matter; nature, disposition of mind; being, existence, entity, reality