jinHaa gurmukh naam araaDhi-aa tinaa dukhbhukh leh jaa-ay.
Those Gurmukhs who worship the Naam, the Name of the Lord - their pain and hunger departs.
ਜਨ ਨਾਨਕੁ ਤ੍ਰਿਪਤੈ ਗਾਇ ਗੁਣ ਹਰਿ ਦਰਸਨੁ ਦੇਹੁ ਸੁਭਾਇ ॥੩॥
jan naanak tariptai gaa-ay gun har darsan dayh subhaa-ay. ||3||
Servant Nanak is satisfied, singing the Glorious Praises of the Lord. Please embellish him with the Blessed Vision of Your Darshan. ||3||
Translation by Dr. Sant Singh Khalsa
In plain words
The rains have finally come, pouring down in soft, steady sheets. All the parched waiting is over — the pain and the hunger wash away, and the whole earth turns green and starts to grow.
Singing about the One feels just like that rain: it fills you up, ends the long thirst, and leaves a settled happiness behind. Nanak says: singing Your praise fills me up — please, let me see You.
Singing what you love is like rain on dry ground — the long thirst finally ends.
The deeper layer
Shalok, Fourth Mehl. The Saawan (monsoon) landmark: rain in torrents (chhahbar) ends pain and hunger; the earth turns green (hariaavalee) and grain grows in abundance — grace as life-giving rain, echoing the green-and-water thread of the spring raags. har achint bulaavai — the Carefree One summons by grace, not demand. har keerat bhagat anand — singing praise (kirtan) is itself bliss. The close is a plea for darshan, the blessed seeing.