Could you give a reference for this please?
عن أبي موسى قال: إن أهل النار ليبكون في النار حتى لو أجريت السفن في دموعهم لجرت ثم إنهم ليبكون الدم بعد الدموع
Imam Abu Bakr ibn Abi Shaybah (rahimahullah) has recorded this narration as the statement of Sayyiduna Abu Musa Al Ash’ari (radiyallahu ‘anhu).
(Musannaf Ibn Abi Shaybah, Hadith: 35268)
However, Imam Hakim (rahimahullah) has recorded a similar narration as a Hadith of Nabi (sallallahu ‘alayhi wa sallam) on the authority of Sayyiduna ‘Abdullah ibn Qays (radiyallahu ‘anhu). See here.
Sayyiduna Abu Musa [Al Ash’ari] (radiyallahu ‘anhu) said: “Verily the people of Jahannam will cry [so much] therein, that if ships were set to sail in their tears, they would sail. They would be crying blood [instead of tears]…”
And Allah Ta’ala Knows best.
Answered by: Moulana Suhail Motala
Approved by: Moulana Muhammad Abasoomar