Lāl's work focused on analyzing and interpreting important Buddhist texts. He published an article titled "Āryamañjuśrī-nāma-saṃgīti: A Text-Analysis" in the journal Dhīḥ in 1986, demonstrating his expertise in textual analysis of Sanskrit Buddhist literature. In 1994, he worked on the texts "Amṛtakaṇikā" by Raviśrījñāna and "Amṛtakaṇikod-dyotanibandha," further showcasing his philological skills.
His research interests extended to Buddhist iconography and symbolism. In 2003, Lāl published a study on "Samyaksambuddhabhāṣitapratimālakṣaṇa" in Dhīḥ, exploring the characteristics of Buddha images as described in Buddhist literature.
Banārasī Lāl's contributions to the field of Buddhist studies helped advance the understanding of complex Sanskrit texts and their philosophical implications. His work continues to be cited by contemporary scholars.
