Guru Nanak Wrote:
"Keeta lori-ai kaam so har peh akhi-ai." "Whatever you wish to accomplish, tell it to the Lord. He will resolve your affairs; the true Guru gives His guarantee of truth. In the society of the saints, you shall taste the treasure of the ambrosial nectar. The Lord is the merciful destroyer of fear; He preserves and protects His slaves. Nanak, sings the glorious praises of the Lord, and so sees the unseen God." (SGGS 91||20||)
The words of Guru Nanak Dev have been chosen as the hymn to commence the Sikh wedding ceremony. It is not uncommon for Sikhs enter a marriage arranged by their families, without previously meeting their partner. Perhaps out of necessity, rather than choice, newlyweds go forth courageously into their new existences with no guarantees. A supplication for a successful union, the hymn offers guidance to the nuptial couple, advising that the commitment to truth is an assurance of grace and God's blessing.
The meaning of ‘Kaaraj de svaar satigur sach saakheeai’, as given by Prof Sahib Singh is that if you act according to the Guru’s teachings your tasks will be well accomplished.
Regards
Rawel Singh