Before doing Chandi Di Vaar, keep in mind that there is a certain rehat to follow for that particular baani. There's a story that two shaheed Singhs visited Sant Baba Harnaam Singh Ji to firm Baba Ji's views on this baani. They explained that if Chandi Di Vaar is recited after the sunset, then it must be continued all night non-stop. It is alright for two or more Singhs to do it in turn. If an individual can recite it all night then that is alright as well. A clean cloth should be spread underneath where you're sitting and you must have your bath first. An oil lamp (dhesi ghior dee joth) should be lit. Your bastars (clothes) should be completely suchet (clean) and you should have keshi ishnaan done. During the day, the baani can be recited as much as you want but with absolute love and devotion.
Bhul Chuk Maaf Karni
ਵਾਹਿਗੁਰੂ ਜੀ ਕਾ ਖਾਲਸਾ ਵਾਹਿਗੁਰੂ ਜੀ ਕੀ ਫਤਹਿ