Assalamu Allikum ya sheikh!
Sheikh Hisham Kabbani came to my dream and said to me you do your khalwa for 40 days, and showed to eat onion leaves and lily flowers only..
What do I want to ya sheikh?
It means keep regularly everything you received from Mawlana, such as staying away from bad character, treating people well, keeping your Salat, and doing your wazifa including fasting.
Hajj Gibril Haddad