Bhagat Sain, whose one hymn has been included in Guru Granth Săhib, is counted among the disciples of Rămănand. Guru Arjan, Nănak V, says in one of his hymns in Guru Granth Sahib that the name of Sain was a household word as a bhagat of rare devotion (GGS, 487). In another hymn, he refers to him as an example of dedication to the service of holymen. Bhagat Ravdŕs in a shabad in the Guru Granth Sähib puts Bhagat Sain with Nămdev, Kabir, Trilochan and Sadhnă in piety (GGS. 1106). According to Bhăi Gurdäs, Bhagat Sain was the disciple of Rămänand and he had adopted him as his preceptor on hearing of the fame of Kabir who, too, was Rămănand’s disciple. All accounts agree that Sain was a barber, some stating that he served at the court of the king of Revă, then called Bändhavgarh, in Central India, while others hold that he was attached to the court of the ruler of Bidar in South India. Those supporting the South Indian tradition believe that Sain was a disciple of jnănadeva. What is the best ŕrati or form of adoration of the Lord is the theme of Sain’s hymn incorporated in Guru Granth Săhib. According to Bhagat Sain, singing of His praises and meditating on His Name constitute the highest worship. These alone will ferry one across the fearful ocean and bring liberation.

Bhai Gurdas, who regards him as a follower of Ramanand says that under Kabir's influence, Sain the barber became a bhagat. His nights were consecrated to loving adoration of the Lord while the days were devoted to the humdrum duties at the King's darbar. Bhagat Sain has been classfied with the other great bhagats in Guru Granth Sahib,

With thy grace, O Lord I were redeemed
Namdeva, Kabir and Trilochan
As were Sadhna and Sain.

Guru Arjan writes :

Jaidev has abandoned ego,
And, Sain, the barber, has been redeemed by serving the Lord.
Deeply interested in bhagati, Sain was always found in the company of the holy. Once a number of sadhus gathered together and went on doing kirtan throughout the night, thus preventing Sain from attending to his work. Next morning when he went to the Raja and apologised for his absence from duty the Raja remarked that he had done his job well.

Sain was overwhelmed with gratitude that God came to his rescue. The Raja realised that he had reached such an elevated stage that God had sent someone else in his place. Thus the Raja and his entire family became the devotees of Sain.

Shabad by Bhagat Sain in Guru Granth Sahib :

With incense, lamps and ghee,
I offer this lamp-lit worship service.
I am a sacrifice to the Lord. || 1 ||

Hail to You, Lord, hail to You!
Again and again, hail to You, Lord King, Ruler of all! || 1 || Pause ||

Sublime is the lamp, and pure is the wick.
You are immaculate and pure, O Brilliant Lord of Wealth! || 2 ||

Ramanand knows the devotional worship of the Lord.
He says that the Lord is all-pervading, the embodiment of supreme joy.||3 ||

The Lord of the world, of wondrous form,
has carried me across the terrifying world-ocean.
Says Sain, remember the Lord,
the embodiment of supreme joy!

(SGGS)