This chaupai appears in the Balakanda section of Shri Ramcharitmanas.

मुद मंगलमय संत समाजू। जो जग जंगम तीरथराजू॥ राम भक्ति जहँ सुरसरि धारा। सरसइ ब्रह्म बिचार प्रचारा॥
Context: where this chaupai appears in Shri Ramcharitmanas
In Balkand, Tulsidas ji compares the assembly of saints to Prayag, the king of pilgrimage places. The society of saints is a moving Tirthraj, full of joy and auspiciousness, where devotion to Ram flows like the stream of the Ganga and the discussion of Brahma flows like the Saraswati.
Read the complete episode containing this chaupai in Shri Ramcharitmanas, also known as the Tulsi Ramayana.
Read the full episode in Shri RamcharitmanasTransliteration
Mud Mangalmay Sant Samaju. Jo Jag Jangam Tirathraju.. Ram Bhakti Jahan Sursari Dhara. Sarasai Brahma Bichar Prachara..
In Latin script this chaupai is also written as “Mud Mangalmay Sant Samaju” or “Mud Mangal Mai Sant Samaju”. The spelling varies; the verse is the same.
Word meanings
- Mud = joy
- Mangalmay = full of auspiciousness
- Jangam = moving, living
- Tirathraju = king of pilgrimage places (Prayag)
- Sursari = the Ganga
- Sarasai = flows
- Brahma bichar prachara = the spreading discussion of Brahma
As a Shalaka answer
This is an auspicious answer. The question is good and the work will be accomplished, especially if the company and counsel of saintly, good people stays with you, for the very heart of this chaupai is the glory of satsang.