Local References: Ask for recommendations at reputable temples or ashrams in Gaya.
Online Platforms: Several reputable online platforms specialize in booking pandits and puja services in holy cities like Gaya (e.g., 99Pandit, PurePrayer, Prayag Pandits, Diyabati, Harivara, etc.). Look for reviews and clear service descriptions.
ISKCON Gaya: They also offer Pind Daan and related puja services, including Narayan Bali packages.
Ensure the pandit is experienced specifically in Narayan Bali rituals performed according to scriptures.