It's important to note that Shubha Mahalaya is primarily a Bengali Hindu ritual observed on the last day of the Pitri Paksha, a fortnight dedicated to honoring ancestors. It marks the end of the fortnight and signifies the arrival of Durga Puja, another significant festival in Bengali culture.
While Tagore might not have written a poem specifically for Shubha Mahalaya, his works, particularly those related to spirituality and the cycle of life, resonate with the underlying themes of the occasion.
For instance, Tagore's poems on the cyclical nature of life and death, the importance of remembering ancestors, and the ultimate victory of good over evil, could be interpreted in the context of Shubha Mahalaya. His poems on nature, especially the autumnal season, also reflect the changing seasons and the transition from the Pitri Paksha to Durga Puja.
While not explicitly about Shubha Mahalaya, exploring these themes in Tagore's poetry could offer insights into the broader cultural significance of the occasion.