Was Guru Nanak the incarnation of Vishnu Bhagwan ?
ਸਤਜੁਗਿ ਤੈ ਮਾਣਿਓ ਛਲਿਓ ਬਲਿ ਬਾਵਨ ਭਾਇਓ ॥ सतजुगि तै माणिओ छलिओ बलि बावन भाइओ ॥ In the Golden Age of Sat Yuga, You were pleased to deceive Baal the king, in the form of a dwarf.
ਤ੍ਰੇਤੈ ਤੈ ਮਾਣਿਓ ਰਾਮੁ ਰਘੁਵੰਸੁ ਕਹਾਇਓ ॥ त्रेतै तै माणिओ रामु रघुवंसु कहाइओ ॥ In the Silver Age of Traytaa Yuga, You were called Raam of the Raghu dynasty.
ਦੁਆਪੁਰਿ ਕ੍ਰਿਸਨ ਮੁਰਾਰਿ ਕੰਸੁ ਕਿਰਤਾਰਥੁ ਕੀਓ ॥ दुआपुरि क्रिसन मुरारि कंसु किरतारथु कीओ ॥ In the Brass Age of Dwaapur Yuga, You were Krishna; You killed Mur the demon and saved Kans.
ਉਗ੍ਰਸੈਣ ਕਉ ਰਾਜੁ ਅਭੈ ਭਗਤਹ ਜਨ ਦੀਓ ॥ उग्रसैण कउ राजु अभै भगतह जन दीओ ॥ You blessed Ugrasain with a kingdom, and You blessed Your humble devotees with fearlessness.
ਕਲਿਜੁਗਿ ਪ੍ਰਮਾਣੁ ਨਾਨਕ ਗੁਰੁ ਅੰਗਦੁ ਅਮਰੁ ਕਹਾਇਓ ॥ कलिजुगि प्रमाणु नानक गुरु अंगदु अमरु कहाइओ ॥ In the Iron Age, the Dark Age of Kali Yuga, You are known and accepted as Guru Nanak, Guru Angad and Guru Amar Das.
ਸ੍ਰੀ ਗੁਰੂ ਰਾਜੁ ਅਬਿਚਲੁ ਅਟਲੁ ਆਦਿ ਪੁਰਖਿ ਫੁਰਮਾਇਓ ॥੭॥ स्री गुरू राजु अबिचलु अटलु आदि पुरखि फुरमाइओ ॥७॥ The sovereign rule of the Great Guru is unchanging and permanent, according the Command of the Primal Lord God. ||7|| Ang 1390
As i think it is written in Dasam Granth that the Dwarf,Raam,Krishna were the incarnation of Vishnu and Hindus also believes that so are the ten Gurus also the Avatar of Vishnu.