Vishnu Purana — Amsha 4 — Chapter 22
ViP 4 22.3
इक्ष्वाकूणाम् अयं वंशः सुमित्रान्तो भविष्यति यतस् तं प्राप्य राजानं स संस्थां प्राप्स्यते कलौ ॥
ikṣvākūṇām ayaṃ vaṃśaḥ sumitrānto bhaviṣyati yatas taṃ prāpya rājānaṃ sa saṃsthāṃ prāpsyate kalau //
This lineage of the Ikṣvākus will have Sumitra as its last; for, on reaching that king, it will come to its end in the Kali age.
AI translation rendered from the Sanskrit, not a published edition