Here are the classifications for each item based on the Five Pillars of Islam:
- honoring Abraham, founding father - No
- the pilgrimage to mecca - Yes (This is Hajj, which is one of the Five Pillars)
- fasting during Ramadan - Yes (This is Sawm, which is one of the Five Pillars)
- worshiping together in a mosque - No (This refers to communal prayer but is not one of the Five Pillars. The actual pillar is Salah, which is the ritual prayer performed five times a day, but not specifically in a mosque.)
So, to summarize:
- honoring Abraham, founding father: No
- the pilgrimage to mecca: Yes
- fasting during Ramadan: Yes
- worshiping together in a mosque: No