Pitṛgaṇa-Vibhāga (Classification of the Pitṛs) and the Śrāddha–Soma Nourishment Cycle
विमानयानैराकाशं पतत्र्रिभिरिवावृतम् / देवदुन्दुभयो नेदुराकाशे मधुरस्वनाः
vimānayānairākāśaṃ patatrribhirivāvṛtam / devadundubhayo nedurākāśe madhurasvanāḥ
With the vimāna-cars, the sky seemed covered as with flocks of birds. In the heavens, the divine kettledrums resounded with sweet tones.