Substitution of new section for section 149.
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....(a) if three years have elapsed from the end of the relevant assessment year, unless the case falls under clause (b); (b) if three years, but not more than ten years, have elapsed from the end of the relevant assessment year unless the Assessing Officer has in his possession books of account or other documents or evidence which reveal that the income chargeable to tax, represented in the form of....
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....ments or any assets requisitioned under section 132A, on or before the 31st day of March, 2021: Provided also that for the purposes of computing the period of limitation as per this section, the time or extended time allowed to the assessee, as per show-cause notice issued under clause (b) of section 148A or the period during which the proceeding under section 148A is stayed by an order or injun....