Mahabharata 3.186.25

यज्ञप्रतिनिधिः पार्थ दानप्रतिनिधिस्तथाव्रतप्रतिनिधिश्चैव तस्मिन्काले प्रवर्तते

yajñapratinidhiḥ pārtha dānapratinidhistathāvratapratinidhiścaiva tasminkāle pravartate

Our plain-language meaning of this verse is waiting for scholar review.