Canonical Ref: YV 6.4
Sanskrit (Devanāgarī)
विष्णो॒: कर्मा॑णि पश्यत॒ यतो॑ व्र॒तानि॑ पस्प॒शे । इन्द्र॑स्य॒ युज्य॒: सखा॑
Canonical CTS URN Reference
Śukla Yajurveda Saṁhitā (Vājasaneyi), YV 6.4. Poorvam Open Research Engine (PORE) Corpus.