The Junction of the Two Seas

And [mention] when Musa said to his servant; "I will not cease [traveling] until I reach the junction of the two seas or continue [traveling] for a long period."Al-Kahf: 60

Meaning where the two seas meet.

Qatadah said: The Persian Sea (now known as the Arabian Sea) and the Roman Sea (now known as the Arabian Gulf). This was also said by  Mujahid.

Ibn 'Atiyyah stated: It is a peninsula in Persia, behind Azerbaijan, that extends from the north to the south. So the point where the two seas meet is beyond Syria, that is the location of 'the two seas’ according to this opinion.

It was also said that they are the Jordanian Sea (Dead Sea) and the Qalzam Sea (Red Sea).

It was also stated that they are in Tangier [i.e where the Mediterranean Sea meets the North Atlantic Ocean]. This was said by Muhammad ibn Ka’b.

It was narrated that Ubay ibn Ka’b said it was in Africa.

As-Suddi stated. They are al-Kar and al-Ras in Armenia.

Some scholars said that it is the Spanish (Mediterranean) Sea and the Ocean. This was narrated by An-Naqqash and is related a lot.

Tafseer Al-Qurtubi.

They are where the Persian Sea (Arabian Sea) and the Roman Sea (Arabian Gulf) meet.

Tafseer At-Tabari

What is meant by ‘the two seas’; is the Persian Sea (Arabian Sea) and the Roman Sea (Arabian Gulf). It was also said that they are the Jordanian Sea (Dead Sea) and the Qalzam Sea (Red Sea). Another opinion is where the two seas meet in Tangier. It was also said in Africa.

Fat-h Al-Qadeer.

Qatadah said: The Persian Sea (Arabian Sea) and the Roman Sea (Arabian Gulf) towards the East. This was also the opinion of Muhammad ibn Ka’b ibn Talhah. Ubay ibn Ka’b said it was in Africa.

Tafseer al-Baghawi.