According to Imam Khomeini edify yourself during the month of Ramadan

Believers worldwide mark Imam Ali (PBUH) martyrdom

Every year, on the 21st day of the Muslim fasting month of Ramadan, mourners gather in mosques and religious centers across Iran to attend ceremonies commemorating the first Shia Imam's martyrdom.

Imam Khomeini's advice to believers for spiritual transformation on the night of Qadr.

Advises and Recommendations of Imam Khomeini about the Holy Month of Ramadan

The blessed month of Ramadan, you should reflect, reform yourselves, and pay attention to God Almighty, seek forgiveness for your unbecoming behavior and deeds, and if, God forbid, you have committed a sin, repent for it prior to entering the blessed month of Ramadan. Habituate your tongue to intimate devotions to God the Almighty

Self purification in the month of Ramadan.

Imam cancelled meetings during blessed month of Ramadan

A memoirs by Ayatollah Tawasuli, extracted from Howzah magazine- no. 45, page 59

How did Imam Khomeini see connection between Quran and holy month of Ramadan?

Imam Khomeini and the Month of Ramadan