SB 9.9.19
sri-rajovaca
kim nimitto guroh sapah
saudasasya mahatmanah
etad veditum icchamah
kathyatam na raho yadi
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
King Pariksit said: O Sukadeva Gosvami, why did Vasistha, the spiritual master of Saudasa, curse that great soul? I wish to know of this. If it is not a confidential matter, please describe it to me.