Get Scotland out of 'race to the bottom with Ukip' - MP
The SNP's Pete Wishart has argued that government and opposition policies on immigration do not represent the views of Scottish people.
If Scots vote against independence in September, Mr Wishart said, it would "signal a contentment with Westminster rule and Westminster politicians' ability to deliver for Scotland".
"I don't like where the UK is going," he told the House, before saying he was particularly concerned about the Immigration Bill: "A nasty, pernicious, rotten bill designed to counter the threat of Ukip."
"We don't do Ukip in Scotland - we barely do Tory!" he continued. "I object to my country being dragged into this monstrous race to the bottom between this government and Ukip."
Earlier, the backbench business debate on 6 February 2014 was opened by Labour's Willie Bain, who implored fellow Scots to join him and "reject the false and binary choice some seek to make in this debate that people have to choose between Scottish-ness or British-ness".
He was followed by Conservative chair of the Treasury Committee, Andrew Tyrie, who predicted a common fiscal arrangement between two independent countries would be a "massive undertaking to design and sustain".
Lib Dem and former Secretary of State for Scotland Michael Moore emphasised his ties to the Borders and how the history of that region demonstrated "we mustn't let those divisions ever return".
Responding to the debate for Labour, Margaret Curran said of proposals for a currency union: "If you're struggling raising your family... it means your credit card borrowing costs will be higher and if you're trying to pay off your mortgage it will take you longer in Scotland to do that."
Then, for the government, Scotland Secretary Alistair Carmichael asked MPs to see the union as a "flexible settlement", whereas independence would lead to "protracted negotiations with dozens of different states and organisations".
The motion for debate was "that this House has considered Scotland's place in the UK" and was agreed without a vote.
On 18 September 2014 Scottish voters will be asked the "yes/no" question: "Should Scotland be an independent country?"