Bharatiya Jyotihshastra (History of Indian Astronomy), translated by R. V. Vaidya v2.c13.s2.81

v2.c13.s2.81

This is a good work on the Muhūrta branch of Samhitā by PADMANĀBHA. Padmanābha was the son of Kṛṣṇadāsa, grand son of Gaṅgādāsa and great grand son of Śivadāsa, a Brāhmana resident of the town named Yamunāpura. His work contains quotations from such works as Bhīma Parākrama, Śrīpati’s Ratnamālā, Dīpikā Rupa Nārāyaṇa, Rāja Mārtaṇḍa, Sāra Sāgara, Ratnāvalī, Jyotiṣtantra (a work on astronomy), Vyāvahāra Caṇḍeśwara and Muktāvalī. SUDHĀKARA remarks that this Padmanābha is the same as the one mentioned by Bhāskara as a writer on Algebra. But it has already been pointed out before (Page 95) that Padmanābha, the writer on Algebra, lived before Śaka 700; and the works Vyavahāra Pradīpa refers to Ratnamālā and Rāja Mārtaṇḍa. It was evidently written sometime after Śaka 964. Padmanābha’s work also gives quotations from the Sūrya-Siddhānta, Varāha Samhitā and other works, and they are found in the modern S.S. and other works. But the Siddhānta Śiromaṇi *gives 4 verses, of which one is Padmanābha's own verse and the remaining three have been quoted by him as from each of the works Śaunak Samhitā, Vasiṣṭha Samhitā and Jyotiṣtantra. This indicates, according to Sudhākara, that Bhāskara must have borrowed these verses from the respective works. But from the nature of the verses, it is felt that Padmanābha's statement is itself unreliable and it is the author's opinion that he lived after Śaka 1072.