Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) said regarding the verse: "And whether you disclose what is in yourselves or conceal it": This verse was revealed about testimony.
Hadith Referenceسنن سعید بن منصور / كتاب التفسير / 473
Hadith Gradingمحدثین:سنده ضعيف لضعف يزيد بن أبي زياد.
Hadith Takhrij«أخرجه سعيد بن منصور فى (سننه) برقم: 473»