 …Quddús, although besieged within the fort of Shaykh Tabarsí
by the battalions and fire of a relentless enemy, engaged, both in the daytime
and in the night-season, in the completion of his eulogy of Bahá’u’lláh—that
immortal commentary on the Sád of Samad which had already assumed the
dimensions of five hundred thousand verses?
…Quddús, although besieged within the fort of Shaykh Tabarsí
by the battalions and fire of a relentless enemy, engaged, both in the daytime
and in the night-season, in the completion of his eulogy of Bahá’u’lláh—that
immortal commentary on the Sád of Samad which had already assumed the
dimensions of five hundred thousand verses? 
- Nabil  (‘The Dawn-Breakers’,
translated and edited by Shoghi Effendi)
Please note:
The combined number of verses in the Qur'an+New Testament+Old Testament is slightly more than 37,000. 
