
Rajab shi ne wata na bakwai a cikin kalandar Hijira, kuma yana daga cikin watannin da aka haramta a cikinsu, wanda aka haramta yaki da zubar da jini a cikinsu. Wannan wata yana da muhimmanci saboda faruwar muhimman abubuwa kamar haifuwar manzon Allah da haifuwar Imam Ali (AS) kuma yana da matsayi na musamman a kalandar Musulunci.
Kalmar "Rajb" ta fito ne daga tushen "Rajb" ma'ana "girmama" da "mafi girma". An zabi wannan sunan ne saboda Larabawa suna girmama wannan wata tun daga nesa da kuma nisantar yaki a cikinsa. Rajab kuma yana da wasu sunaye, da suka hada da Rajab al-Fard, Rajab al-Mudhaar, Rajab al-Asim, Rajab al-Murajabba, Rajab al-Haram, Munsal al-Asinah da kuma Munsal al-Allah. Kowanne daga cikin wadannan sunaye yana nufin wata siffa ta musamman ta wannan wata, misali Rajab al-Fard ana kiransa ne saboda wannan wata ya kebanta da sauran watannin da aka haramta, kuma Rajab al-Muzar ya sanya suna ne saboda girmamawa ta musamman da kabilar Muzar suka yi. wannan watan.
Rajab yana daya daga cikin watannin da aka haramta, wadanda suka rabu da sauran watannin da aka haramta (Zhiqadah, Dhu Hijjah da Muharram). A zamanin jahiliyya shekara ta fara ne daga watan Rajab, kuma an sanya watan tsalle a wannan lokaci bayan Jumada al-Akhira da kuma gabanin Rajab. A zamanin jahiliyya, larabawa suna girmama watan Rajab da daraja sosai. A cikin wannan wata an haramta yaki da zubar da jini da kisa da fashi da zubar da jini da haram.
Har ila yau, daga cikin abubuwan da suka faru a watan Rajab, a zamanin jahiliyya da bayan jahiliyya da aka manta da su, an gudanar da bajekoli (souk) da dama a cikin wannan wata, ciki har da kasuwar Sohar, wadda aka gudanar a rana ta farko na watan Rajab, da kasuwar Daba, wanda ya ci gaba har zuwa karshen watan Rajab. Bayan zuwan Musulunci, ingancin wannan wata da kimarsa ya karu, aka mai da bangarorin addini a wannan wata mai alfarma.