It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that some Bedouins came to the Prophet (peace and blessings be upon him) and said: O Messenger of Allah! We live in a sandy region; we have no access to water, nor do we find water for three or four months (Abu al-Rabi' was in doubt), and among us are women in postnatal bleeding, menstruating women and people in a state of janabah. He (peace and blessings be upon him) said: "Hold to the earth (soil)."
(b) Abu al-Rabi' al-Samman is da'if (weak).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1039