“Did Alexander defeat Raja Porus at the Battle of Hydaspes?”

Georgy Zhukov who was a Soviet General and Marshal said while addressing cadets of Indian Military Academy in 1957 that the actions of Alexander after the Battle of Hydaspes suggest he suffered an outright defeat.
[1] https://twitter.com/MoeedNj/status/1338445800620380160

Raja Porus ruled a substantial principality from his capital near the modern-day town of Mandi Bahauddin in the district of Gujrat, Pakistan. The Battle of Hydaspes between Alexander and Porus took place near Bhera stop on Islamabad - Lahore motorway in 326 BC.

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Arrian who was Alexander's court chronicler describes that 30,000 foot soldiers and 4000 cavalry took part while 300 chariots and 200 elephants were used. Arrian writes that nearly 20,000 of the adversary's infantry were killed in this battle including 3,000 cavalry.

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Aetzaz Ahsan writes in ‘Indus Saga and the making of Pakistan’ that even if entire Greek army were only slaughtering unresisting sheep in few hours that it took the final battle to be fought this would have perhaps been an impossible task. Arrian's account is not credible.

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The attribution of victory to Alexander has come down to us through classical Greek sources.
The accomplished historian, Dr Buddha Prakash, has already raised the fundamental question when after discussing the inconsistencies between the accounts of Justin, Plutarch..

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Diodoros, Curtius and Arrian, Prakash observed that, 'In this way the accounts of Greek writers about the end of battle are full of confusion and contradictions. What is clear from these traditions is that Alexander and Porus made an honourable peace and became friends.

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From the unanimous remark of these authors, Porus was reinstated in his state and the territories conquered by Alexander in today's Pakistan were added to his dominion”

All Greek historians agree that this was the toughest battle Alexander’s armies ever fought.

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But at the end, Raja Porus became ruler of a larger region than he had held before the battle.

My teacher wrote this couplet for Raja Porus:
ہر شخص سکندر کی مدح سرائ میں مشغول تھا
ایسے میں پورس کا قصیدہ مجھ پر واجب ٹھرا تھا

Many Numismatic scholars have claimed that Porus was a Buddhist. Its unfortunate that people in today's Pakistan name their children after Alexander (Sikandar e Azam) but no one would name his son after Raja Porus - the native son of the soil.

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Aetzaz Ahsan paid tribute to Porus in his book ‘Indus Saga':

The fact is that Porus defeated Alexander,
But Alexander's chronicler feared the wrath of his king:
The fact is that Alexander could.not go past Gujrat
Because he feared his army.
And his army feared Porus

Greek historians have claimed that Alexander withdrew because his troops were weary and close to mutiny. This also deems contemplation. The punishment of such a crime was crucifixion. Also Macedonian army had a system of rotation where fresh troops were brought in from Europe.

Strabo, the Greek historian sums it up:

“Generally speaking, the men who have written on the affairs of the subcontinent were a set of liars…Of this we became the more convinced whilst writing the history of Alexander.”