Gurbilas Patshahi Dasvee [10] was written in 1751 CE by Koer Singh and covers the history of Guru Gobind Singh Ji. The following passage are some instructions given to the Khalsa after the first initiation in 1699 CE at Anandpur Sahib.

Guru Gobind Singh Ji instructed the Singhs with five core Rehats:


ਸ਼ਸਤ੍ਰ ਮੇਲ ਗੁਰ ਸਬਦ ਸੋ, ਕਛ ਕੇਸਨ ਸਦ ਪ੍ਰੇਮ ।
[Always] stay with your Weapons [shastar] and the Guru's Word [Shabad], always have love for your Kachera [undergarment] and Kes [uncut hair].

ਕਰਦ ਰਾਖਨੀ ਪੰਚ ਏ, ਤਜੈ ਨ ਕਬ ਹੀ ਨੇਮ ।
Keeping a Karad [small dagger] is the fifth [commandment/rehat], do not abandon these in your daily discipline.

ਨੋਵਾਂ ਅਧਿਆਇ, ਪੰਨਾ ੧੧੧
ਗੁਰਬਿਲਾਸ ਪਾਤਿਸ਼ਾਹੀ ੧੦, ਕੁਇਰ ਸਿੰਘ
Chapter Nine, Pg. 111
Gurbilas Patshahi 10, Koer Singh