Shaykhul-Islaam Ibn Taymiyyah (may Allaah have mercy upon him) said:
"Whenever you can't find the Tafseer in the Qur'aan nor in the Sunnah, you are to go back to the statements of the Sahaabah. Indeed, they have the most comprehension in that matter since they witnessed it from the Qur'aan, and situations that where specific to it. Also, they have the complete understanding, the correct knowledge, and the righteous actions. Especially, the scholars and elders from amongst them like the four rightly guided Khulafaa, and the rightly guided leaders from amongst them, like Abdullaah Ibn Mas'ood (may Allaah be pleased with him)."
Source: Qalaa-idul Jawhar wa At-Teejaan alaa Uloom Al-Qur'aan - Shaykh Abu Amr Abdul-Kareem al-Hajooree pg. 217
Sisters Upon Al-Istiqaamah