Ajisari

An ajisãrì is one who arouses others to pray and feast during Ramadan.

Although the ajisari does not expect to be compensated by their fellow believers, they believe that Allah will reward them, in the hereafter, for forsaking their bed and discomforting themself during the month-long fasting period.

The name derives from the Arabic word "Suhur," meaning early morning meals during the holy month of Ramadan; it's spelled and pronounced "sãrì" in Yoruba.

The ajisari practically works alone, which explains why they're sometimes called 'Lone Rangers'.

[1] In the late 1970s, however, one group in Ibadan, Nigeria, Taiwo-Kehinde Ajisari (The Twin Brothers' Ajisari Group), broke that norm when they emerged.